At week 37, yellow secretions without accompanying uncomfortable symptoms are normal. Another thing is that if there is pain or fever, most likely you have inflammation of the urinary system. But copious watery yellow discharge with an odor during pregnancy at 37 weeks is guaranteed to indicate leakage of amniotic fluid, most likely a crack has formed in the bladder.
But in the last three weeks of pregnancy, even greenish mucus is allowed in the discharge. This is a clear sign of impending labor, and the mucus is nothing more than a plug coming out. Congratulations, it’s time for you to go to the maternity hospital, there are only a few days left before the birth.